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Mourão A, Serrano I, Cunha E, Tavares L, Lourenço A, Oliveira M. In vitro efficacy of lavender oil, otological gel and gentamicin to eradicate biofilm produced by Pseudomonas aeruginosa. Vet Dermatol 2024. [PMID: 39210732 DOI: 10.1111/vde.13294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 07/18/2024] [Accepted: 08/16/2024] [Indexed: 09/04/2024]
Abstract
BACKGROUND Otitis externa (OE) is one of the most frequently diagnosed dermatological diseases in dogs, having a multifactorial aetiology. Among the bacterial agents associated with canine OE, Pseudomonas aeruginosa is of special concern owing to its frequent multidrug resistance profile and ability to form biofilms related to the infection's chronicity and recurrence. OBJECTIVES The main objective of this study was to evaluate and compare the antibiofilm activity of two innovative antimicrobials-an otological gel containing a synthetic antimicrobial peptide and Lavandula angustifolia essential oil-with gentamicin (a conventional antibiotic) using biofilm-producing P. aeruginosa isolates obtained from dogs with OE. MATERIALS AND METHODS The biofilm eradication capacity of gentamicin, otological gel and lavender oil was determined against a collection of 12 P. aeruginosa biofilm-producers among 35 clinical isolates obtained from the ear canals of dogs with OE. Also, the antimicrobial activity of the otological gel against P. aeruginosa biofilms was assessed in an in vitro model of dog cerumen. RESULTS Lavender oil showed the best effectiveness after 30 min of contact, eradicating 58.3% (seven of 12) of the isolates, and gentamicin showed full eradication (12 of 12) after 24 h. The otological gel acted more slowly than the lavender oil; yet at 24 h, the antibiofilm capacity of both compounds was similar, with no significant difference between them. It also was found that triglycerides from synthetic cerumen earwax had antipseudomonal activity and, when combined with the otological gel, led to the full eradication of P. aeruginosa. CONCLUSIONS AND CLINICAL RELEVANCE The results of this in vitro study indicate that lavender oil and the otological gel may be effective topical treatments for canine OE promoted by P. aeruginosa biofilm-producers, as alternatives to gentamicin.
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Affiliation(s)
- Ana Mourão
- CIISA-Center for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, Portugal
| | - Isa Serrano
- CIISA-Center for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, Portugal
| | - Eva Cunha
- CIISA-Center for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, Portugal
| | - Luís Tavares
- CIISA-Center for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, Portugal
| | - Ana Lourenço
- CIISA-Center for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, Portugal
| | - Manuela Oliveira
- CIISA-Center for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, Portugal
- cE3c-Centre for Ecology, Evolution and Environmental Changes & CHANGE-Global Change and Sustainability Institute, Lisbon, Portugal
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Lu Z, Xing T, Zhao Z, Li Z, Hou D, Ma Z, Chen S, Yang Y, Li S, Zhang H. Induction of Salmonella Enteritidis into a Viable but Nonculturable State by Cinnamaldehyde and Its Resuscitation. Foodborne Pathog Dis 2024; 21:499-507. [PMID: 38695190 DOI: 10.1089/fpd.2023.0186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2024] Open
Abstract
Trans-cinnamaldehyde (TC), a typical plant-derived compound, has been widely used in the control of foodborne pathogen contamination. Nevertheless, the risk associated with the occurrence of viable but nonculturable (VBNC) bacteria induced by TC remains unclear. The results of this study showed that Salmonella Enteritidis (S. Enteritidis) entered the VBNC state after being induced by TC at a minimum inhibitory concentration of 312.5 μg/mL and survived for at least 22 days under TC treatment. Enhanced resistance was found against heat treatment (75°C, 30 s), antibiotics (i.e., ampicillin, ceftriaxone sodium, chloramphenicol), and hydrogen peroxide (3%) in VBNC S. Enteritidis. A synergistic effect against VBNC S. Enteritidis occurred when TC was combined with acid treatment, including lactic acid and acetic acid (pH = 3.5). VBNC and resuscitated S. Enteritidis by sodium pyruvate treatment (100 mM) were found to retain the infectious ability to Caco-2 cells. Relative expression levels of the stress-related genes relA, spoT, ppx, lon, katG, sodA, dnaK, and grpE were upregulated in VBNC S. Enteritidis. Accumulation of reactive oxygen species (ROS) and protein aggregates was observed in VBNC cells. Besides, the resuscitation of VBNC cells was accompanied with clearance of ROS and protein aggregates. In summary, this study presents a comprehensive characterization of stress tolerance and resuscitation of VBNC S. Enteritidis induced by cinnamaldehyde, and the results provide useful information for the development of effective control strategy against VBNC pathogenic bacteria in food production.
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Affiliation(s)
- Ziying Lu
- College of Biological and Pharmaceutical Science, Guangdong University of Technology, Guangzhou, China
| | - Tong Xing
- College of Biological and Pharmaceutical Science, Guangdong University of Technology, Guangzhou, China
| | - Zepeng Zhao
- College of Biological and Pharmaceutical Science, Guangdong University of Technology, Guangzhou, China
| | - Zefeng Li
- College of Biological and Pharmaceutical Science, Guangdong University of Technology, Guangzhou, China
| | - Dongping Hou
- College of Biological and Pharmaceutical Science, Guangdong University of Technology, Guangzhou, China
| | - Zhuolin Ma
- College of Biological and Pharmaceutical Science, Guangdong University of Technology, Guangzhou, China
| | - Siyi Chen
- College of Biological and Pharmaceutical Science, Guangdong University of Technology, Guangzhou, China
| | - Yuheng Yang
- College of Biological and Pharmaceutical Science, Guangdong University of Technology, Guangzhou, China
| | - Shaoting Li
- College of Biological and Pharmaceutical Science, Guangdong University of Technology, Guangzhou, China
| | - Hongmei Zhang
- College of Biological and Pharmaceutical Science, Guangdong University of Technology, Guangzhou, China
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Scheau C, Pop CR, Rotar AM, Socaci S, Mălinaș A, Zăhan M, Coldea ȘD, Pop VC, Fit NI, Chirilă F, Criveanu HR, Oltean I. The Influence of Physical Fields (Magnetic and Electric) and LASER Exposure on the Composition and Bioactivity of Cinnamon Bark, Patchouli, and Geranium Essential Oils. PLANTS (BASEL, SWITZERLAND) 2024; 13:1992. [PMID: 39065519 PMCID: PMC11281253 DOI: 10.3390/plants13141992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 07/18/2024] [Accepted: 07/19/2024] [Indexed: 07/28/2024]
Abstract
In recent years, essential oils (EOs) have received increased attention from the research community, and the EOs of cinnamon, patchouli, and geranium have become highly recognized for their antibacterial, antifungal, antiviral, and antioxidant effects. Due to these properties, they have become valuable and promising candidates for addressing the worldwide threat of antimicrobial resistance and other diseases. Simultaneously, studies have revealed promising new results regarding the effects of physical fields (magnetic and electric) and LASER (MEL) exposure on seed germination, plant growth, biomass accumulation, and the yield and composition of EOs. In this frame, the present study aims to investigate the influence of MEL treatments on cinnamon, patchouli, and geranium EOs, by specifically examining their composition, antimicrobial properties, and antioxidant activities. Results showed that the magnetic influence has improved the potency of patchouli EO against L. monocytogenes, S. enteritidis, and P. aeruginosa, while the antimicrobial activity of cinnamon EO against L. monocytogenes was enhanced by the electric and laser treatments. All exposures have increased the antifungal effect of geranium EO against C. albicans. The antioxidant activity was not modified by any of the treatments. These findings could potentially pave the way for a deeper understanding of the efficiency, the mechanisms of action, and the utilization of EOs, offering new insights for further exploration and application.
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Affiliation(s)
- Camelia Scheau
- PhD School of Agricultural Engineering Sciences, USAMV Cluj-Napoca, 3-5, Mănăştur Street, 400372 Cluj-Napoca, Romania;
| | - Carmen Rodica Pop
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 64, Floresti Street, 400509 Cluj-Napoca, Romania; (C.R.P.); (A.M.R.); (S.S.)
| | - Ancuța Mihaela Rotar
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 64, Floresti Street, 400509 Cluj-Napoca, Romania; (C.R.P.); (A.M.R.); (S.S.)
| | - Sonia Socaci
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 64, Floresti Street, 400509 Cluj-Napoca, Romania; (C.R.P.); (A.M.R.); (S.S.)
| | - Anamaria Mălinaș
- Department of Environmental Protection and Engineering, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, 3-5, Mănăştur Street, 400372 Cluj-Napoca, Romania
| | - Marius Zăhan
- Faculty of Animal Science and Biotechnology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 3-5, Mănăştur Street, 400372 Cluj-Napoca, Romania; (M.Z.); (Ș.D.C.)
| | - Ștefania Dana Coldea
- Faculty of Animal Science and Biotechnology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 3-5, Mănăştur Street, 400372 Cluj-Napoca, Romania; (M.Z.); (Ș.D.C.)
| | - Viorel Cornel Pop
- Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, 3-5, Mănăştur Street, 400372 Cluj-Napoca, Romania
| | - Nicodim Iosif Fit
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5, Mănăstur Street, 400372 Cluj-Napoca, Romania; (N.I.F.); (F.C.)
| | - Flore Chirilă
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5, Mănăstur Street, 400372 Cluj-Napoca, Romania; (N.I.F.); (F.C.)
| | - Horia Radu Criveanu
- Faculty of Horticulture, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5, Mănăstur Street, 400372 Cluj-Napoca, Romania;
| | - Ion Oltean
- Department of Plant Protection, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 3-5, Mănăstur Street, 400372 Cluj-Napoca, Romania;
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Hassan MA, Abd El-Aziz S, Nabil-Adam A, Tamer TM. Formulation of novel bioactive gelatin inspired by cinnamaldehyde for combating multi-drug resistant bacteria: Characterization, molecular docking, pharmacokinetic analyses, and in vitro assessments. Int J Pharm 2024; 652:123827. [PMID: 38253268 DOI: 10.1016/j.ijpharm.2024.123827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/13/2024] [Accepted: 01/19/2024] [Indexed: 01/24/2024]
Abstract
This study set out to formulate antibacterial and antioxidant gelatin boosted by cinnamaldehyde for combating multi-drug resistant bacteria previously obtained from chronic wounds. Towards this end, gelatin amine groups were conjugated with carbonyl groups of cinnamaldehyde, producing cinnamyl-gelatin Schiff bases. The physicochemical attributes of cinnamyl-gelatin Schiff bases were probed concerning alterations in chemical structures and microstructures compared to native gelatin. Besides, cinnamyl-gelatin Schiff bases exhibited higher thermal stability than gelatin, with a diminishing in solubility due to increases in hydrophobicity features. Interestingly, cinnamyl-gelatin derivatives exerted antibacterial activities versus multi-drug resistant Gram-negative and Gram-positive bacteria, showing maximum growth inhibition at the highest concentration of cinnamaldehyde incorporated into gelatin. The scavenging activities of gelatin against DPPH and ABTS•+ were promoted in cinnamyl-gelatin derivatives from 11.93 ± 0.6 % to 49.9 ± 2.5 % and 12.54 ± 0.63 % to 49.9 ± 3.12 %, respectively. Remarkably, cinnamyl-gelatin derivatives induced the proliferation of fibroblast cells, implying their prospective applications in tissue engineering. Molecular docking and pharmacokinetic investigations disclosed the potential antibacterial mechanisms of cinnamyl-gelatin derivatives alongside their biopharmaceutical applications. Altogether, these findings suggest that cinnamyl-gelatin derivatives could be utilized to tailor antibacterial-free antibiotics and antioxidant wound dressings against virulent bacteria to promote chronic wound recovery.
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Affiliation(s)
- Mohamed A Hassan
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, 21934 Alexandria, Egypt.
| | - Sarah Abd El-Aziz
- Polymer Materials Research Department, Advanced Technologies, and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, 21934 Alexandria, Egypt
| | - Asmaa Nabil-Adam
- Marine Biotechnology and Natural Products Laboratory, National Institute of Oceanography & Fisheries, Cairo 11516, Egypt
| | - Tamer M Tamer
- Polymer Materials Research Department, Advanced Technologies, and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, 21934 Alexandria, Egypt.
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5
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Wells CW. Effects of essential oils on economically important characteristics of ruminant species: A comprehensive review. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2024; 16:1-10. [PMID: 38131027 PMCID: PMC10731003 DOI: 10.1016/j.aninu.2023.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/27/2023] [Accepted: 05/04/2023] [Indexed: 12/23/2023]
Abstract
Essential oils derived from plants can provide biological impacts to livestock species. Scientific studies researching essential oils in livestock have investigated various essential oils for prevention and treatment of microbial infection and parasites as well as to enhance milk production, animal performance and rumen function. Despite the availability of several commercial products containing essential oils to promote animal health and production, the vast amount of essential oils, modes of application, and effective concentrations of the essential oils suggest there are more opportunities for essential oils to be utilized in commercial livestock production and veterinary medicine. The objective of this review is to contribute to the understanding of the value that essential oils can provide to the ruminant diet and to examine the biological impact of various essential oils on economically important production traits of ruminant species.
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Lupia C, Castagna F, Bava R, Naturale MD, Zicarelli L, Marrelli M, Statti G, Tilocca B, Roncada P, Britti D, Palma E. Use of Essential Oils to Counteract the Phenomena of Antimicrobial Resistance in Livestock Species. Antibiotics (Basel) 2024; 13:163. [PMID: 38391549 PMCID: PMC10885947 DOI: 10.3390/antibiotics13020163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/31/2024] [Accepted: 02/05/2024] [Indexed: 02/24/2024] Open
Abstract
Antimicrobial resistance is an increasingly widespread phenomenon that is of particular concern because of the possible consequences in the years to come. The dynamics leading to the resistance of microbial strains are diverse, but certainly include the incorrect use of veterinary drugs both in terms of dosage and timing of administration. Moreover, the drug is often administered in the absence of a diagnosis. Many active ingredients in pharmaceutical formulations are, therefore, losing their efficacy. In this situation, it is imperative to seek alternative treatment solutions. Essential oils are mixtures of compounds with different pharmacological properties. They have been shown to possess the antibacterial, anti-parasitic, antiviral, and regulatory properties of numerous metabolic processes. The abundance of molecules they contain makes it difficult for treated microbial species to develop pharmacological resistance. Given their natural origin, they are environmentally friendly and show little or no toxicity to higher animals. There are several published studies on the use of essential oils as antimicrobials, but the present literature has not been adequately summarized in a manuscript. This review aims to shed light on the results achieved by the scientific community regarding the use of essential oils to treat the main agents of bacterial infection of veterinary interest in livestock. The Google Scholar, PubMed, SciELO, and SCOPUS databases were used for the search and selection of studies. The manuscript aims to lay the foundations for a new strategy of veterinary drug use that is more environmentally friendly and less prone to the emergence of drug resistance phenomena.
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Affiliation(s)
- Carmine Lupia
- Mediterranean Ethnobotanical Conservatory, Sersale (CZ), 88054 Catanzaro, Italy
- National Ethnobotanical Conservatory, Castelluccio Superiore, 85040 Potenza, Italy
| | - Fabio Castagna
- Mediterranean Ethnobotanical Conservatory, Sersale (CZ), 88054 Catanzaro, Italy
- Department of Health Sciences, University of Catanzaro Magna Græcia, 88100 Catanzaro, Italy
| | - Roberto Bava
- Department of Health Sciences, University of Catanzaro Magna Græcia, 88100 Catanzaro, Italy
| | - Maria Diana Naturale
- Ministry of Health, Directorate General for Health Programming, 00144 Rome, Italy
| | - Ludovica Zicarelli
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, 87036 Cosenza, Italy
| | - Mariangela Marrelli
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, 87036 Cosenza, Italy
| | - Giancarlo Statti
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, 87036 Cosenza, Italy
| | - Bruno Tilocca
- Department of Health Sciences, University of Catanzaro Magna Græcia, 88100 Catanzaro, Italy
| | - Paola Roncada
- Department of Health Sciences, University of Catanzaro Magna Græcia, 88100 Catanzaro, Italy
| | - Domenico Britti
- Department of Health Sciences, University of Catanzaro Magna Græcia, 88100 Catanzaro, Italy
| | - Ernesto Palma
- Department of Health Sciences, University of Catanzaro Magna Græcia, 88100 Catanzaro, Italy
- Center for Pharmacological Research, Food Safety, High Tech and Health (IRC-FSH), University of Catanzaro Magna Græcia, 88100 Catanzaro, Italy
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Song K, Chen L, Suo N, Kong X, Li J, Wang T, Song L, Cheng M, Guo X, Huang Z, Huang Z, Yang Y, Tian X, Choo SW. Whole-transcriptome analysis reveals mechanisms underlying antibacterial activity and biofilm inhibition by a malic acid combination (MAC) in Pseudomonas aeruginosa. PeerJ 2023; 11:e16476. [PMID: 38084141 PMCID: PMC10710775 DOI: 10.7717/peerj.16476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 10/26/2023] [Indexed: 12/18/2023] Open
Abstract
Background Pseudomonas aeruginosa is a highly prevalent bacterial species known for its ability to cause various infections and its remarkable adaptability and biofilm-forming capabilities. In earlier work, we conducted research involving the screening of 33 metabolites obtained from a commercial source against two prevalent bacterial strains, Escherichia coli and Staphylococcus aureus. Through screening assays, we discovered a novel malic acid combination (MAC) consisting of malic acid, citric acid, glycine, and hippuric acid, which displayed significant inhibitory effects. However, the precise underlying mechanism and the potential impact of the MAC on bacterial biofilm formation remain unknown and warrant further investigation. Methods To determine the antibacterial effectiveness of the MAC against Pseudomonas aeruginosa, we conducted minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) assays. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) techniques were employed to observe bacterial morphology and biofilm formation. We further performed a biofilm inhibition assay to assess the effect of the MAC on biofilm formation. Whole-transcriptome sequencing and bioinformatics analysis were employed to elucidate the antibacterial mechanism of the MAC. Additionally, the expression levels of differentially expressed genes were validated using the real-time PCR approach. Results Our findings demonstrated the antibacterial activity of the MAC against P. aeruginosa. SEM analysis revealed that the MAC can induce morphological changes in bacterial cells. The biofilm assay showed that the MAC could reduce biofilm formation. Whole-transcriptome analysis revealed 1093 differentially expressed genes consisting of 659 upregulated genes and 434 downregulated genes, in response to the MAC treatment. Mechanistically, the MAC inhibited P. aeruginosa growth by targeting metabolic processes, secretion system, signal transduction, and cell membrane functions, thereby potentially compromising the survival of this human pathogen. This study provides valuable insights into the antibacterial and antibiofilm activities of the MAC, a synergistic and cost-effective malic acid combination, which holds promise as a potential therapeutic drug cocktail for treating human infectious diseases in the future.
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Affiliation(s)
- Kunping Song
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Li Chen
- Universiti Malaya, Institute of Biological Sciences, Faculty of Science, Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Nanhua Suo
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Xinyi Kong
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Juexi Li
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Tianyu Wang
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
| | - Lanni Song
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
| | - Mengwei Cheng
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
| | - Xindian Guo
- Wenzhou No.2 Foreign Language School, Wenzhou, Zhejiang, China
| | - Zhenghe Huang
- Wenzhou No.2 Foreign Language School, Wenzhou, Zhejiang, China
| | - Zichen Huang
- Wenzhou No.2 Foreign Language School, Wenzhou, Zhejiang, China
| | - Yixin Yang
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou, Zhejiang, China
| | - Xuechen Tian
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou, Zhejiang, China
| | - Siew Woh Choo
- Wenzhou-Kean University, College of Science, Mathematics and Technology, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang, China
- Wenzhou-Kean University, Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou, Zhejiang, China
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Jeddi M, El Hachlafi N, Fadil M, Benkhaira N, Jeddi S, Benziane Ouaritini Z, Fikri-Benbrahim K. Combination of Chemically-Characterized Essential Oils from Eucalyptus polybractea, Ormenis mixta, and Lavandula burnatii: Optimization of a New Complete Antibacterial Formulation Using Simplex-Centroid Mixture Design. Adv Pharmacol Pharm Sci 2023; 2023:5593350. [PMID: 37645561 PMCID: PMC10462449 DOI: 10.1155/2023/5593350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/03/2023] [Accepted: 08/09/2023] [Indexed: 08/31/2023] Open
Abstract
This study aims to identify the volatile profile of three essential oils obtained from Eucalyptus polybractea cryptonifera (EPEO), Ormenis mixta (OMEO), and Lavandula burnatii briquet (LBEO) and to examine their combined antibacterial activity that affords the optimal inhibitory ability against S. aureus and E. coli using simplex-centroid mixture design and checkerboard assay. Essential oils (EOs) were isolated by hydrodistillation and characterized using gas chromatography-mass spectrometry (GC-MS) and gas chromatography coupled with flame-ionization detector (GC-FID). The antibacterial activity was performed using disc diffusion and microdilution assays. The chemical analysis revealed that 1,8-cineole (23.75%), p-cymene (22.47%), and α-pinene (11.20%) and p-menthane-1,8-diol (18.19%), α-pinene (10.81%), and D-germacrene (9.17%) were the main components detected in E. polybractea and O. mixta EOs, respectively. However, L. burnatii EO was mainly represented by linalool (24.40%) and linalyl acetate (18.68%). The EPEO, LBEO, and OMEO had a strong antibacterial effect on S. aureus with minimal inhibitory concentrations (MICs) values ranging from 0.25 to 0.5% (v/v). Furthermore, the combination of 1/2048 MICEPEO + 1/4 MICLBEO showed a synergistic antibacterial effect on S. aureus with a FIC index of 0.25, while the formulation of 1/4 MICEPEO + 1/4 MICOMEO demonstrated an antibacterial synergistic activity on E. coli with a FIC index of 0.5. Moreover, the simplex-centroid mixture design reported that the most effective combinations on E. coli and S. aureus correspond to 32%/28%/40% and 35%/30%/35% of E. polybractea, O. mixta, and L. burnatii, respectively. Presented information highlights the action of antibacterial formulations of these EOs and suggests their potential applications as alternatives to commercialized drugs to contract the development of bacteria causing serious infections and food deterioration.
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Affiliation(s)
- Mohamed Jeddi
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Sciences and Technologies Faculty, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Imouzzer Road, Fez, Morocco
- Laboratory of Natural Substances, Pharmacology, Environment, Modeling, Health and Quality of Life (SNAMOPEQ), Faculty of Sciences, Sidi Mohamed Ben Abdellah University, Fez 30 000, Morocco
| | - Naoufal El Hachlafi
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Sciences and Technologies Faculty, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Imouzzer Road, Fez, Morocco
| | - Mouhcine Fadil
- Laboratory of Applied Organic Chemistry, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Road of Imouzzer, Fez, Morocco
| | - Nesrine Benkhaira
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Sciences and Technologies Faculty, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Imouzzer Road, Fez, Morocco
| | - Samir Jeddi
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Sciences and Technologies Faculty, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Imouzzer Road, Fez, Morocco
| | - Zineb Benziane Ouaritini
- Laboratory of Natural Substances, Pharmacology, Environment, Modeling, Health and Quality of Life (SNAMOPEQ), Faculty of Sciences, Sidi Mohamed Ben Abdellah University, Fez 30 000, Morocco
| | - Kawtar Fikri-Benbrahim
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Sciences and Technologies Faculty, Sidi Mohamed Ben Abdellah University, P.O. Box 2202, Imouzzer Road, Fez, Morocco
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Cheng S, Su R, Song L, Bai X, Yang H, Li Z, Li Z, Zhan X, Xia X, Lü X, Shi C. Citral and trans-cinnamaldehyde, two plant-derived antimicrobial agents can induce Staphylococcus aureus into VBNC state with different characteristics. Food Microbiol 2023; 112:104241. [PMID: 36906323 DOI: 10.1016/j.fm.2023.104241] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 02/10/2023] [Accepted: 02/15/2023] [Indexed: 02/19/2023]
Abstract
Viable but nonculturable (VBNC) state bacteria are difficult to detect in the food industry due to their nonculturable nature and their recovery characteristics pose a potential threat to human health. The results of this study indicated that S. aureus was found to enter the VBNC state completely after induced by citral (1 and 2 mg/mL) for 2 h, and after induced by trans-cinnamaldehyde (0.5 and 1 mg/mL) for 1 h and 3 h, respectively. Except for VBNC state cells induced by 2 mg/mL citral, the VBNC state cells induced by the other three conditions (1 mg/mL citral, 0.5 and 1 mg/mL trans-cinnamaldehyde) were able to be resuscitated in TSB media. In the VBNC state cells induced by citral and trans-cinnamaldehyde, the ATP concentration was reduced, the hemolysin-producing ability was significantly decreased, but the intracellular ROS level was elevated. The results of heat and simulated gastric fluid experiments showed different environment resistance on VBNC state cells induced by citral and trans-cinnamaldehyde. In addition, by observing the VBNC state cells showed that irregular folds on the surface, increased electron density inside and vacuoles in the nuclear region. What's more, S. aureus was found to enter the VBNC state completely after induced by meat-based broth containing citral (1 and 2 mg/mL) for 7 h and 5 h, after induced by meat-based broth containing trans-cinnamaldehyde (0.5 and 1 mg/mL) for 8 h and 7 h. In summary, citral and trans-cinnamaldehyde can induce S. aureus into VBNC state and food industry needs to comprehensively evaluate the antibacterial capacity of these two plant-derived antimicrobial agents.
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Affiliation(s)
- Shuai Cheng
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Ruiying Su
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Luyi Song
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiangyang Bai
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hui Yang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhuo Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhenye Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiangjun Zhan
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiaodong Xia
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, 116304, China
| | - Xin Lü
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Chao Shi
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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10
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Kiani BH, Alonso MN, Weathers PJ, Shell SS. Artemisia afra and Artemisia annua Extracts Have Bactericidal Activity against Mycobacterium tuberculosis in Physiologically Relevant Carbon Sources and Hypoxia. Pathogens 2023; 12:227. [PMID: 36839499 PMCID: PMC9963027 DOI: 10.3390/pathogens12020227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/25/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023] Open
Abstract
Mycobacterium tuberculosis (Mtb) is a deadly pathogen and causative agent of human tuberculosis, causing ~1.5 million deaths every year. The increasing drug resistance of this pathogen necessitates novel and improved treatment strategies. A crucial aspect of the host-pathogen interaction is bacterial nutrition. In this study, Artemisia annua and Artemisia afra dichloromethane extracts were tested for bactericidal activity against Mtb strain mc26230 under hypoxia and various infection-associated carbon sources (glycerol, glucose, and cholesterol). Both extracts showed significant bactericidal activity against Mtb, regardless of carbon source. Based on killing curves, A. afra showed the most consistent bactericidal activity against Mtb for all tested carbon sources, whereas A. annua showed the highest bactericidal activity in 7H9 minimal media with glycerol. Both extracts retained their bactericidal activity against Mtb under hypoxic conditions. Further investigations are required to determine the mechanism of action of these extracts and identify their active constituent compounds.
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Affiliation(s)
| | | | | | - Scarlet S. Shell
- Department of Biology and Biotechnology, Worcester Polytechnic Institute, Worcester, MA 01609, USA
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11
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Lepczyński A, Herosimczyk A, Bucław M, Adaszyńska-Skwirzyńska M. Antibiotics in avian care and husbandry-status and alternative antimicrobials. PHYSICAL SCIENCES REVIEWS 2023. [DOI: 10.1515/psr-2021-0123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Abstract
Undoubtedly, the discovery of antibiotics was one of the greatest milestones in the treatment of human and animal diseases. Due to their over-use mainly as antibiotic growth promoters (AGP) in livestock farming, antimicrobial resistance has been reported with increasing intensity, especially in the last decades. In order to reduce the scale of this phenomenon, initially in the Scandinavian countries and then throughout the entire European Union, a total ban on the use of AGP was introduced, moreover, a significant limitation in the use of these feed additives is now observed almost all over the world. The withdrawal of AGP from widespread use has prompted investigators to search for alternative strategies to maintain and stabilize the composition of the gut microbiota. These strategies include substances that are used in an attempt to stimulate the growth and activity of symbiotic bacteria living in the digestive tract of animals, as well as living microorganisms capable of colonizing the host’s gastrointestinal tract, which can positively affect the composition of the intestinal microbiota by exerting a number of pro-health effects, i.e., prebiotics and probiotics, respectively. In this review we also focused on plants/herbs derived products that are collectively known as phytobiotic.
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Affiliation(s)
- Adam Lepczyński
- Department of Physiology, Cytobiology and Proteomics , West Pomeranian University of Technology , Szczecin , Poland
| | - Agnieszka Herosimczyk
- Department of Physiology, Cytobiology and Proteomics , West Pomeranian University of Technology , Szczecin , Poland
| | - Mateusz Bucław
- Department of Monogastric Animal Sciences , West Pomeranian University of Technology , Szczecin , Poland
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12
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Hakeem MJ, Feng J, Ma L, Ma L, Lu X. Whole transcriptome sequencing analysis of synergistic combinations of plant-based antimicrobials and zinc oxide nanoparticles against Campylobacter jejuni. Microbiol Res 2023; 266:127246. [DOI: 10.1016/j.micres.2022.127246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/25/2022] [Accepted: 10/25/2022] [Indexed: 11/06/2022]
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13
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Microbiological and Sensorial Quality of Beef Meat ( Longissimus dorsi) Marinated with Cinnamon Extract and Stored at Various Temperatures. Foods 2022; 11:foods11243971. [PMID: 36553712 PMCID: PMC9778215 DOI: 10.3390/foods11243971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 12/02/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022] Open
Abstract
Meat spoilage caused by temperature abuse is a major problem for producers, retailers, and consumers that can generate large economic losses to industries. Microbial growth of Pseudomonas spp. is the main source of spoilage during storage. Cinnamon has antimicrobial properties that may potentially be used to reduce the spoilage caused by Pseudomonas. The objectives of this study were to determine the inhibitory effect of cinnamon extract (CE) against Pseudomonas aeruginosa (ATCC 27853) and evaluate the treatment of CE on meat quality during different storage temperatures (5 °C, 10 °C, 15 °C, and 25 °C). The anti-Pseudomonas result showed that 100% (w/v) CE concentration produced a 13.50 mm zone of inhibition in a disc diffusion assay. The minimum inhibitor concentration (MIC) of CE was noted at 25% (v/v), whereas the minimum bactericidal concentration (MBC) value was observed at 50% (v/v) concentration of CE. The time-kill showed the growth of P. aeruginosa decreased from 7.64 to 5.39 log CFU/mL at MIC concentration. Total phenolic content and IC50 value of the cinnamon extract was expressed as 6.72 ± 0.87 mg GAE/g extract and 0.15 mg/mL, respectively. When the meat was marinated with 50% (v/v) CE and stored at various temperatures, the total viable count (TVC) and growth of Pseudomonas spp. were lowered as compared to the control sample. However, the reduction in microbial count in all samples was influenced by the storage temperature, where the lowered microbial count was noted in the sample treated with CE and stored at 5 and 10 °C for 48 h. The pH of meat treated with or without CE ranged from pH 5.74 to 6.48. The sensory attributes of colour, texture, and overall acceptability have a significant difference, except for odour, between marinated meat and control. The results indicate that the use of cinnamon extract as the marination agent for meat could reduce the growth of Pseudomonas spp. and therefore assist in extending the shelf life of meat at 5 and 10 °C storage temperatures.
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14
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Wang Y, Liu H, Zhan F. Effects of Natural Borneol on Germ Tube Formation and Preformed Biofilm Activity in Candida albicans. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221129128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Candida albicans infection mainly occurs in patients with suppressed immune function and is the main pathogen of nosocomial infections. The use of natural products aimed at controlling fungal diseases is considered an interesting alternative to synthetic fungicides due to their lower adverse reactions and the lower cost of plant preparations compared to modern conventional pharmaceuticals. Natural borneol has a long history of treating ulcers and local infections in traditional Chinese medicine. In this study, we present an analysis of the in vitro effects of natural borneol on planktonic cells of C albicans in the liquid and vapor phases. We also investigated the effects of natural borneol on germ tube formation and mature biofilm activity of C albicans. We found that vapor-phase borneol (minimum inhibitory concentration [MIC] 0.4 mg/cm3) inhibited C albicans more effectively than in the liquid phase (MIC 2 mg/mL). The C albicans germ tube decreased by 99% to 60% at sub-MICs of 0.5 to 0.125 mg/mL. The inhibitory effects of 0.25, 0.5, 1, 2, and 4 mg/mL borneol on the biofilm activity were 33.7%, 48.6%, 49.9%, 52.9%, and 58.2%, respectively. Natural borneol may have potential in the treatment and prevention of C albicans infections.
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Affiliation(s)
- Yazhou Wang
- Department of Clinical Laboratory, Changzhou Cancer Hospital, Changzhou, China
| | - Huiling Liu
- Department of Clinical Laboratory, Changzhou Cancer Hospital, Changzhou, China
| | - Feng Zhan
- Department of Clinical Laboratory, Changzhou Cancer Hospital, Changzhou, China
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15
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Qadri H, Haseeb Shah A, Mudasir Ahmad S, Alshehri B, Almilaibary A, Ahmad Mir M. Natural products and their semi-synthetic derivatives against antimicrobial-resistant human pathogenic bacteria and fungi. Saudi J Biol Sci 2022; 29:103376. [PMID: 35874656 PMCID: PMC9290337 DOI: 10.1016/j.sjbs.2022.103376] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/09/2022] [Accepted: 07/10/2022] [Indexed: 12/24/2022] Open
Abstract
COVID-19 pandemic has traumatized the entire world. During this outbreak, an upsurge in MDR-associated pathogenic microbial organisms has been recorded. The increasing human microbial diseases pose a severe danger to global human safety. The infectious microbes have developed multiple tolerance strategies to overcome the negative drug impacts. Several naturally occurring chemicals produced from bacteria, plants, animals, marine species, and other sources with antimicrobial characteristics have been reviewed. These compounds show promise in minimizing the globally increasing microbial diseases.
Human infectious diseases caused by various microbial pathogens, in general, impact a large population of individuals every year. These microbial diseases that spread quickly remain to be a big issue in various health-related domains and to withstand the negative drug impacts, the antimicrobial-resistant pathogenic microbial organisms (pathogenic bacteria and pathogenic fungi) have developed a variety of resistance processes against many antimicrobial drug classes. During the COVID-19 outbreak, there seems to be an upsurge in drug and multidrug resistant-associated pathogenic microbial species. The preponderance of existing antimicrobials isn’t completely effective, which limits their application in clinical settings. Several naturally occurring chemicals produced from bacteria, plants, animals, marine species, and other sources are now being studied for antimicrobial characteristics. These natural antimicrobial compounds extracted from different sources have been demonstrated to be effective against a variety of diseases, although plants remain the most abundant source. These compounds have shown promise in reducing the microbial diseases linked to the development of drug tolerance and resistance. This paper offers a detailed review of some of the most vital and promising natural compounds and their derivatives against various human infectious microbial organisms. The inhibitory action of different natural antimicrobial compounds, and their possible mechanism of antimicrobial action against a range of pathogenic fungal and bacterial organisms, is provided. The review will be useful in refining current antimicrobial (antifungal and antibacterial) medicines as well as establishing new treatment strategies to tackle the rising number of human bacterial and fungal-associated infections.
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Affiliation(s)
- Hafsa Qadri
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar 190006, India
| | - Abdul Haseeb Shah
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar 190006, India
| | | | - Bader Alshehri
- Department of Medical Laboratory Science, College of Applied Medical Sciences, Majmaah University, Majmaah 11952, Saudi Arabia
| | - Abdullah Almilaibary
- Department of Family & Community Medicine, Faculty of Medicine, Albaha University, Alaqiq 307501, Saudi Arabia
| | - Manzoor Ahmad Mir
- Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar 190006, India
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16
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Molecular Interaction Studies and Phytochemical Characterization of Mentha pulegium L. Constituents with Multiple Biological Utilities as Antioxidant, Antimicrobial, Anticancer and Anti-Hemolytic Agents. Molecules 2022; 27:molecules27154824. [PMID: 35956775 PMCID: PMC9370026 DOI: 10.3390/molecules27154824] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/20/2022] [Accepted: 07/23/2022] [Indexed: 12/14/2022] Open
Abstract
Multiple biological functions of Mentha pulegium extract were evaluated in the current work. Phytochemical components of the M. pulegium extract were detected by Gas Chromatography-Mass Spectrometry (GC-MS) and High-performance liquid chromatography (HPLC). Moreover, M. pulegium extract was estimated for antioxidant potential by 2,2-Diphenyl-1-picryl-hydrazyl-hydrate (DPPH) free radical scavenging, antimicrobial activity by well diffusion, and anticoagulant activity via prothrombin time (PT) and activated partial thromboplastin time (APTT). GC-MS analysis detected compounds including cholesterol margarate, stigmast-5-en-3-ol, 19-nor-4-androstenediol, androstan-17-one, pulegone-1,2-epoxide, isochiapin B, dotriacontane, hexadecanoic acid and neophytadiene. Chrysoeriol (15.36 µg/mL) was followed by kaempferol (11.14 µg/mL) and 7-OH flavone (10.14 µg/mL), catechin (4.11 µg/mL), hisperdin (3.05 µg/mL), and luteolin (2.36 µg/mL) were detected by HPLC as flavonoids, in addition to ferulic (13.19 µg/mL), cinnamic (12.69 µg/mL), caffeic (11.45 µg/mL), pyrogallol (9.36 µg/mL), p-coumaric (5.06 µg/mL) and salicylic (4.17 µg/mL) as phenolics. Antioxidant activity was detected with IC50 18 µg/mL, hemolysis inhibition was recorded as 79.8% at 1000 μg/mL, and PT and APTT were at 21.5 s and 49.5 s, respectively, at 50 μg/mL of M. pulegium extract. The acute toxicity of M. pulegium extract was recorded against PC3 (IC50 97.99 µg/mL) and MCF7 (IC50 80.21 µg/mL). Antimicrobial activity of M. pulegium extract was documented against Bacillus subtilis, Escherichia coli, Pseudomonasaureus, Candida albicans, Pseudomonas aeruginosa, but not against black fungus Mucor circinelloides. Molecular docking was applied using MOE (Molecular Operating Environment) to explain the biological activity of neophytadiene, luteolin, chrysoeriol and kaempferol. These compounds could be suitable for the development of novel pharmacological agents for treatment of cancer and bacterial infections.
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17
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Foda AM, Kalaba MH, El-Sherbiny GM, Moghannem SA, El-Fakharany EM. Antibacterial activity of essential oils for combating colistin-resistant bacteria. Expert Rev Anti Infect Ther 2022; 20:1351-1364. [PMID: 35839089 DOI: 10.1080/14787210.2022.2101997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES Colistin (polymyxin E) is a bactericidal antibiotic used to treat severe infections caused by multidrug-resistant Gram-negative bacteria. The product of the mcr1 gene generates transferrable plasmid-mediated colistin resistance, which has arisen as a worldwide healthcare problem. This study aimed to isolate, and identify colistin-resistant bacteria, and evaluate the ability of essential oils its fights. METHODS : Twenty-seven bacterial isolates were collected from patients who were admitted to National Cancer Institute, Cairo, Egypt, and processed by standard microbiological methods. Essential oils were purchased from AB chem company, Egypt, screened for antibacterial, cytotoxic activity, and (GC-MS) analysis. RESULTS A total of 5 bacterial isolates were resistant to colistin with minimum inhibitory concentration (MIC) ranging from 6.25->200µg/ml. Cinnamon oil exhibited the highest activity against colistin-resistant strains followed by thyme and eucalyptus oil. The (MIC) of cinnamon oils against resistant strains ranged from 4.88 to 312.5 µg/ml. Moreover, mcr-1 gene expression was extremely down-regulated after treatment of bacterial strains with cinnamon oil and decreased to 20-35-fold. Examination of treated bacterial cells with sub-inhibitory concentrations under transmission electron microscopy showed various abnormalities occurred in most of these cells. CONCLUSIONS cinnamon oil exhibits antibacterial activity against colistin-resistant strains, showing as a promising natural alternative in clinical therapy.
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Affiliation(s)
- Abdullah M Foda
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt
| | - Mohamed H Kalaba
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt
| | - Gamal M El-Sherbiny
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt
| | - Saad A Moghannem
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt
| | - Esmail M El-Fakharany
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Application, Egypt
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18
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Khanoonkon N, Rugthaworn P, Kongsin K, Sukyai P, Harnkarnsujarit N, Sothornvit R, Chollakup R, Sukatta U. Enhanced antimicrobial effectiveness of synergistic mixtures of rambutan peel extract and cinnamon essential oil on food spoilage bacteria and bio‐based food packaging. J Food Saf 2022. [DOI: 10.1111/jfs.12976] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nattaporn Khanoonkon
- Kasetsart Agricultural and Agro‐Industrial Product Improvement Institute Kasetsart University Bangkok Thailand
| | - Prapassorn Rugthaworn
- Kasetsart Agricultural and Agro‐Industrial Product Improvement Institute Kasetsart University Bangkok Thailand
| | - Kunat Kongsin
- Kasetsart Agricultural and Agro‐Industrial Product Improvement Institute Kasetsart University Bangkok Thailand
- Biotechnology of Biopolymers and Bioactive Compounds Special Research Unit, Faculty of Agro‐Industry, Department of Biotechnology Kasetsart University Bangkok Thailand
| | - Prakit Sukyai
- Biotechnology of Biopolymers and Bioactive Compounds Special Research Unit, Faculty of Agro‐Industry, Department of Biotechnology Kasetsart University Bangkok Thailand
- Center for Advanced Studies for Agriculture and Food (CASAF), Kasetsart University Institute for Advanced Studies Kasetsart University Bangkok Thailand
| | - Nathdanai Harnkarnsujarit
- Faculty of Agro‐Industry, Department of Packaging and Materials Technology Kasetsart University Bangkok Thailand
| | - Rungsinee Sothornvit
- Faculty of Engineering at Kamphaengsaen, Department of Food Engineering Kasetsart University Nakhon Pathom Thailand
| | - Rungsima Chollakup
- Kasetsart Agricultural and Agro‐Industrial Product Improvement Institute Kasetsart University Bangkok Thailand
| | - Udomlak Sukatta
- Kasetsart Agricultural and Agro‐Industrial Product Improvement Institute Kasetsart University Bangkok Thailand
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19
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Thirapanmethee K, Kanathum P, Khuntayaporn P, Huayhongthong S, Surassmo S, Chomnawang MT. Cinnamaldehyde: A plant-derived antimicrobial for overcoming multidrug-resistant Acinetobacter baumannii infection. Eur J Integr Med 2021. [DOI: 10.1016/j.eujim.2021.101376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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20
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Santos MI, Lima A, Mota J, Rebelo P, Ferreira RB, Pedroso L, Ferreira MA, Sousa I. Extended Cheese Whey Fermentation Produces a Novel Casein-Derived Antibacterial Polypeptide That Also Inhibits Gelatinases MMP-2 and MMP-9. Int J Mol Sci 2021; 22:ijms222011130. [PMID: 34681790 PMCID: PMC8541382 DOI: 10.3390/ijms222011130] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/06/2021] [Accepted: 10/09/2021] [Indexed: 01/18/2023] Open
Abstract
Our previous works produced a whey fermentation methodology that yielded antibacterial activity and potential inhibition of matrix metalloproteases (MMP)-2 and -9. Here, we evaluated if these activities were due to fermentation-produced peptides. Prolonged fermentation was carried out in the presence of our specific lactic acid bacteria (LAB) consortium. LAB fermentation yielded a total of 11 polypeptides, which were predominantly produced after 6 days of fermentation. One which was derived from beat casein presented a particularly high antibacterial activity against food pathogenic bacteria and was more effective than standard food disinfectants. This polypeptide was further studied and was also found to be active against several strains of pathogenic bacteria, including methicillin-resistant Staphylococcus aureus (MRSA), in a dose-dependent manner. It also inhibited MMP-2 and MMP-9 whilst reducing HT29 cancer cell migration in vitro. Overall, this novel whey-derived polypeptide presents dual antibacterial and anti-inflammatory activity, revealing a strong potential to be used in functional foods or as a nutraceutical. Its identification and further characterization can open novel perspectives in the field of preventive/curative diets related to gut microbiota, gut inflammation, and cancer prevention, particularly if used in in vivo studies.
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Affiliation(s)
- Maria Isabel Santos
- Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal; (A.L.); (J.M.); (P.R.); (R.B.F.); (L.P.); (M.A.F.); (I.S.)
- Faculty of Veterinary Medicine, Universidade Lusófona de Humanidades e Tecnologias, Campo Grande, 376, 1749-024 Lisboa, Portugal
- Correspondence:
| | - Ana Lima
- Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal; (A.L.); (J.M.); (P.R.); (R.B.F.); (L.P.); (M.A.F.); (I.S.)
- Faculty of Veterinary Medicine, Universidade Lusófona de Humanidades e Tecnologias, Campo Grande, 376, 1749-024 Lisboa, Portugal
| | - Joana Mota
- Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal; (A.L.); (J.M.); (P.R.); (R.B.F.); (L.P.); (M.A.F.); (I.S.)
- Faculty of Veterinary Medicine, Universidade Lusófona de Humanidades e Tecnologias, Campo Grande, 376, 1749-024 Lisboa, Portugal
| | - Patrícia Rebelo
- Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal; (A.L.); (J.M.); (P.R.); (R.B.F.); (L.P.); (M.A.F.); (I.S.)
| | - Ricardo Boavida Ferreira
- Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal; (A.L.); (J.M.); (P.R.); (R.B.F.); (L.P.); (M.A.F.); (I.S.)
| | - Laurentina Pedroso
- Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal; (A.L.); (J.M.); (P.R.); (R.B.F.); (L.P.); (M.A.F.); (I.S.)
- Faculty of Veterinary Medicine, Universidade Lusófona de Humanidades e Tecnologias, Campo Grande, 376, 1749-024 Lisboa, Portugal
| | - Maria Adélia Ferreira
- Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal; (A.L.); (J.M.); (P.R.); (R.B.F.); (L.P.); (M.A.F.); (I.S.)
| | - Isabel Sousa
- Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal; (A.L.); (J.M.); (P.R.); (R.B.F.); (L.P.); (M.A.F.); (I.S.)
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Phytochemical Traits and Biological Activity of Eryngium amethystinum and E. alpinum (Apiaceae). HORTICULTURAE 2021. [DOI: 10.3390/horticulturae7100364] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Eryngium amethystinum L. is a wild vegetable used in Croatia. Both E. amethystinum and E. alpinum L. are decorative plants that can also be used in horticulture. To find out the hidden qualities of these two species, the following biological activities were studied: essential oil (EO) composition, analyzed by gas chromatography and gas chromatography with mass spectrometry (GC, GC–MS); phenolic compound content (PC), analyzed by high performance liquid chromatography (HPLC); total phenols as well as total flavonoids, analyzed by ultraviolet–visible spectrophotometry (UV/Vis); antioxidants, analyzed by 2,2-diphenyl-1-picrylhydrazyl radical-scavenging activity (DPPH), β-carotene-linoleic acid assay, chelating activity and reducing power of the extracts; and antimicrobial evaluation by micro-dilution assay and inhibition of Candida albicans blastospore germination. The major constituents of EO were β-caryophyllene (15.2%), α-pinene (10.2%) and 2,3,6-trimethylbenzaldehyde (9.3%) for E. amethystinum and caryophyllene oxide (27.9%), bicyclogermacrene (13.2%) and germacrene D (8.2%) for E. alpinum. The methanol extracts of both species showed a broad spectrum of antibacterial and antifungal activity with minimum inhibitory concentrations (MIC) less than or equal to 1.944 and 1.11 mg/mL, respectively.
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Syed A, Zeyad MT, Shahid M, Elgorban AM, Alkhulaifi MM, Ansari IA. Heavy Metals Induced Modulations in Growth, Physiology, Cellular Viability, and Biofilm Formation of an Identified Bacterial Isolate. ACS OMEGA 2021; 6:25076-25088. [PMID: 34604686 PMCID: PMC8482775 DOI: 10.1021/acsomega.1c04396] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 09/07/2021] [Indexed: 05/17/2023]
Abstract
The release of untreated tannery effluents comprising biotoxic heavy metal (HM) compounds into the ecosystem is one of our society's most serious environmental and health issues. After discharge, HM-containing industrial effluents reach agricultural soils and thus negatively affect the soil microbial diversity. Considering these, we assessed the effect of HMs on identified soil beneficial bacteria. Here, the effects of four heavy metals (HMs), viz., chromium (Cr), cadmium (Cd), nickel (Ni), and lead (Pb), on cellular growth, physiology, cell permeability, and biofilm formation of Enterobacter cloacae MC9 (accession no.: MT672587) were evaluated. HMs in a concentration range of 25-200 μg mL-1 were used throughout the study. Among HMs, Cd in general had the maximum detrimental effect on bacterial physiology. With increasing concentrations of HMs, bacterial activities consistently decreased. For instance, 200 μgCr mL-1 concentration greatly and significantly (p ≤ 0.05) reduced the synthesis of indole-3-acetic acid (IAA) by 70% over control. Furthermore, 200 μg mL-1 Cd maximally and significantly (p ≤ 0.05) reduced the synthesis of 2,3-dihydroxybenzoic acid (2,3-DHBA), salicylic acid (SA), 1-aminocyclopropane 1-carboxylate (ACC) deaminase, and extra polymeric substances (EPSs) of E. cloacae MC9 by 80, 81, 77, and 59%, respectively, over control. While assessing the toxic effect of HMs on the P-solubilizing activity of E. cloacae, the toxicity pattern followed the order Cr (mean value = 94.6 μg mL-1) > Cd (mean value = 127.2 μg mL-1) > Pb (mean value = 132.4 μg mL-1) > Ni (mean value = 140.4 μg mL-1). Furthermore, the colony-forming unit (CFU) count (Log10) of strain MC9 was completely inhibited at 150, 175, and 200 μg mL-1 concentrations of Cr and Cd. The confocal laser scanning microscopic (CLSM) analysis of HM-treated bacterial cells showed an increased number of red-colored dead cells as the concentration of HMs increased from 25 to 200 μg mL-1. Likewise, the biofilm formation ability of strain MC9 was maximally (p ≤ 0.05) inhibited at higher concentrations of Cd. In summary, the present investigation undoubtedly suggests that E. cloacae strain MC9 recovered from the HM-contaminated rhizosphere endowed with multiple activities could play an important role in agricultural practices to augment crop productivity in soils contaminated with HMs. Also, there is an urgent need to control the direct discharge of industrial waste into running water to minimize heavy metal pollution. Furthermore, before the application of HMs in agricultural fields, their appropriate field dosages must be carefully monitored.
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Affiliation(s)
- Asad Syed
- Department
of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohammad Tarique Zeyad
- Department
of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Mohammad Shahid
- Department
of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Abdallah M. Elgorban
- Department
of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Manal M. Alkhulaifi
- Department
of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Irfan Aamer Ansari
- Department
of Drug Science and Technology, University
of Turin, Turin 10124, Italy
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Alvand ZM, Rahimi M, Rafati H. A microfluidic chip for visual investigation of the interaction of nanoemulsion of Satureja Khuzistanica essential oil and a model gram-negative bacteria. Int J Pharm 2021; 607:121032. [PMID: 34419590 DOI: 10.1016/j.ijpharm.2021.121032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 08/16/2021] [Accepted: 08/17/2021] [Indexed: 01/08/2023]
Abstract
Nanotechnology has provided novel approaches against food born and pathogenic bacteria. Within the present study, the effects of pure and nanoemulsified essential oil derived from Satureja Khuzistanica essential oil (SKEO) on Escherichia coli (E. coli ATCC 25922) as a human pathogen has been studied using a microfluidic chip. The morphology and antibacterial activity of E. coli at disparate residence durations (from 2 to 30 min) and various nanoemulsified or pure essential oil concentrations (8.0-62.5 μg mL-1) and numerous nanoemulsion's droplet sizes from 32 to 124 nm, have been investigated in the microfluidic system. Also, the quantitative analysis including optical density, time killing assay, protein, nucleic acid and potassium release were employed to confirm the effects of bacterial inhibition taking advantage of the chip apparatus. It was revealed that the prepared nanoemulsion left a considerable destructive effect on E. coli bacterial membrane, confirmed by fast release of cytoplasmic elements including protein, nucleic acid and potassium. However, this process was remarkably intensified for both nanoemulsion and pure essential oil using the microfluidic chip versus the conventional methods. The results also revealed that after 4 min of bacterium treatment by 12.5 μg mL-1 nanoemulsion with 32 nm mean particle size, the bacterial membrane wall began to degrade rapidly, and bacterial activity was almost completely inhibited in a 20-min period. These findings may have implications in the similarly structured and phospholipid-encapsulated bacteria and viruses, like COVID-19.
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Affiliation(s)
- Zinab Moradi Alvand
- Department of Pharmaceutical Engineering, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran, Iran; Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran, Iran
| | - Masoud Rahimi
- Department of Pharmaceutical Engineering, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran, Iran
| | - Hasan Rafati
- Department of Pharmaceutical Engineering, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran, Iran.
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Álvarez-Martínez FJ, Barrajón-Catalán E, Herranz-López M, Micol V. Antibacterial plant compounds, extracts and essential oils: An updated review on their effects and putative mechanisms of action. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 90:153626. [PMID: 34301463 DOI: 10.1016/j.phymed.2021.153626] [Citation(s) in RCA: 141] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 06/03/2021] [Accepted: 06/10/2021] [Indexed: 05/20/2023]
Abstract
BACKGROUND Antibiotic-resistant bacteria pose a global health threat. Traditional antibiotics can lose their effectiveness, and the development of novel effective antimicrobials has become a priority in recent years. In this area, plants represent an invaluable source of antimicrobial compounds with vast therapeutic potential. PURPOSE To review the full possible spectrum of plant antimicrobial agents (plant compounds, extracts and essential oils) discovered from 2016 to 2021 and their potential to decrease bacterial resistance. Their activities against bacteria, with special emphasis on multidrug resistant bacteria, mechanisms of action, possible combinations with traditional antibiotics, roles in current medicine and future perspectives are discussed. METHODS Studies focusing on the antimicrobial activity of compounds of plant origin and their mechanism of action against bacteria were identified and summarized, including contributions from January 2016 until January 2021. Articles were extracted from the Medline database using PubMed search engine with relevant keywords and operators. RESULTS The search yielded 11,689 articles from 149 countries, of which 101 articles were included in this review. Reports from 41 phytochemicals belonging to 20 families were included. Reports from plant extracts and essential oils from 39 plant species belonging to 17 families were also included. Polyphenols and terpenes were the most active phytochemicals studied, either alone or as a part of plant extracts or essential oils. Plasma membrane disruption was the most common mechanism of antimicrobial action. Number and position of phenolic hydroxyl groups, double bonds, delocalized electrons and conjugation with sugars in the case of flavonoids seemed to be crucial for antimicrobial capacity. Combinations of phytochemicals with beta-lactam antibiotics were the most studied, and the inhibition of efflux pumps was the most common synergistic mechanism. CONCLUSION In recent years, terpenes, flavones, flavonols and some alkaloids and phenylpropanoids, either isolated or as a part of extracts, have shown promising antimicrobial activity, being membrane disruption their most common mechanism. However, their utilization as appropriate antimicrobials need to be boosted by means of new omics technologies and network pharmacology to find the most effective combinations among them or in combination with antibiotics.
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Affiliation(s)
- F J Álvarez-Martínez
- Instituto de Biología Molecular y Celular (IBMC) and Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández (UMH), 03202 Elche, Spain
| | - E Barrajón-Catalán
- Instituto de Biología Molecular y Celular (IBMC) and Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández (UMH), 03202 Elche, Spain.
| | - M Herranz-López
- Instituto de Biología Molecular y Celular (IBMC) and Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández (UMH), 03202 Elche, Spain
| | - V Micol
- Instituto de Biología Molecular y Celular (IBMC) and Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández (UMH), 03202 Elche, Spain; CIBER: CB12/03/30038, Fisiopatología de la Obesidad y la Nutrición, CIBERobn, Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
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25
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Maurya A, Prasad J, Das S, Dwivedy AK. Essential Oils and Their Application in Food Safety. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2021. [DOI: 10.3389/fsufs.2021.653420] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Food industries are facing a great challenge due to contamination of food products with different microbes such as bacteria, fungi, viruses, parasites, etc. These microbes deteriorate food items by producing different toxins during pre- and postharvest processing. Mycotoxins are one of the most potent and well-studied toxic food contaminants of fungal origin, causing a severe health hazard to humans. The application of synthetic chemicals as food preservatives poses a real scourge in the present scenario due to their bio-incompatibility, non-biodegradability, and environmental non-sustainability. Therefore, plant-based antimicrobials, including essential oils, have developed cumulative interest as a potential alternative to synthetic preservatives because of their ecofriendly nature and generally recognized as safe status. However, the practical utilization of essential oils as an efficient antimicrobial in the food industry is challenging due to their volatile nature, less solubility, and high instability. The recent application of different delivery strategies viz. nanoencapsulation, active packaging, and polymer-based coating effectively addressed these challenges and improved the bioefficacy and controlled release of essential oils. This article provides an overview of essential oils for the preservation of stored foods against bacteria, fungi, and mycotoxins, along with the specialized mechanism of action and technological advancement by using different delivery systems for their effective application in food and agricultural industries smart green preservative.
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26
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Critical review on the use of essential oils against spoilage in chilled stored fish: A quantitative meta-analyses. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.02.054] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Abstract
The emerging literature has suggested essential oils (EOs) as new possible weapons to fight antimicrobial resistance due to their inherent antimicrobial properties. However, the potential pharmaceutical use of EOs is confronted by several limitations, including being non-specific in terms of drug targeting, possessing a high cytotoxicity as well as posing a high risk for causing skin irritation. Furthermore, some EOs have been demonstrated to adversely affect the cellular lipid profiles and permeability of the cell membrane, which may result in undesirable outcomes for the cells. Nevertheless, owing to their naturally complex compositions, EOs still hold undiscovered potential to mitigate antimicrobial resistance, as an alternative to existing antibiotics. To address the issue of overuse in antibiotics for crops which have led to the growing threat of antimicrobial resistance globally, EOs have also been proposed as potential biopesticides. Since the perceived advantages of antimicrobial attributes in EOs remain largely unexplored, this review aims to provide a discourse into its current practical usefulness in the agricultural setting. Finally, updated bioengineering techniques with emphasis of the biopesticide potential of EOs as a means to alleviate antimicrobial resistance will be included.
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Kačániová M, Galovičová L, Valková V, Tvrdá E, Terentjeva M, Žiarovská J, Kunová S, Savitskaya T, Grinshpan D, Štefániková J, Felsöciová S, Vukovic N, Kowalczewski PŁ. Antimicrobial and antioxidant activities of Cinnamomum cassia essential oil and its application in food preservation. OPEN CHEM 2021. [DOI: 10.1515/chem-2021-0191] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
This study was designed to investigate chemical and antioxidant properties, as well as the antimicrobial and antibiofilm behaviour of Cinnamomum cassia essential oil (CCEO). MALDI-TOF MS Biotyper mass spectrometry was applied to evaluate the biofilms of Stenotrophonomonas maltophilia and Bacillus subtilis, while the antibiofilm ability of CCEO was assessed on wooden and glass surfaces. The antimicrobial activity by disc diffusion method, microdilution method, and vapour phase for two biofilm-producing bacteria and three Penicillium spp. were used. Antimicrobial and antibiofilm properties were assessed using the agar microdilution protocol. The vapour phase of Penicillium citrinum, P. crustosum, P. expansum, S. maltophilia, and B. subtilis on bread, carrot, potato, sweet potato, and apple in situ was studied. Specific molecular variations related to the biofilm formation and genetic analogies were evaluated with MSP spectra dendrograms of S. maltophilia and B. subtilis profiles were grown on different days. The results of disc diffusion and broth diffusion methods showed that CCEO was strongly effective against all tested microorganisms and the vapour phase method was effective and active against all Penicillium spp., but not strongly effective against bacteria in food preservation of food matrices.
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Affiliation(s)
- Miroslava Kačániová
- Department of Fruit Science, Viticulture and Enology, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture , Tr. A. Hlinku 2, 94976 , Nitra , Slovakia
- Department of Bioenergetics, Food Analysis and Microbiology, Institute of Food Technology and Nutrition, University of Rzeszow , Cwiklinskiej 1, 35-601 , Rzeszow , Poland
| | - Lucia Galovičová
- Department of Fruit Science, Viticulture and Enology, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture , Tr. A. Hlinku 2, 94976 , Nitra , Slovakia
| | - Veronika Valková
- Department of Fruit Science, Viticulture and Enology, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture , Tr. A. Hlinku 2, 94976 , Nitra , Slovakia
| | - Eva Tvrdá
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture , Tr. A. Hlinku 2, 94976 , Nitra , Slovakia
| | - Margarita Terentjeva
- Institute of Food and Environmental Hygiene, Faculty of Veterinary Medicine, Latvia University of Life Sciences and Technologies , K. Helmaņa iela 8, LV-3004 , Jelgava , Latvia
| | - Jana Žiarovská
- Department of Plant Genetics and Breeding, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture , Tr. A. Hlinku 2, 94976 , Nitra , Slovakia
| | - Simona Kunová
- Department of Food Hygiene and Safety, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture , Tr. A. Hlinku 2, 94976 , Nitra , Slovakia
| | - Tatsiana Savitskaya
- Research Institute for Physical Chemical Problems, Belarusian State University , Leningradskaya str. 14, 220030 , Minsk , Belarus
| | - Dmitrij Grinshpan
- Research Institute for Physical Chemical Problems, Belarusian State University , Leningradskaya str. 14, 220030 , Minsk , Belarus
| | - Jana Štefániková
- AgroBioTech Research Centre, Slovak University of Agriculture , Tr. A. Hlinku 2, 94976 , Nitra , Slovakia
| | - Soňa Felsöciová
- Department of Microbiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture , Tr. A. Hlinku 2, 94976 , Nitra , Slovakia
| | - Nenad Vukovic
- Department of Chemistry, Faculty of Science, University of Kragujevac , P. O. Box 12 , Kragujevac , Serbia
| | - Przemysław Łukasz Kowalczewski
- Department of Food Technology of Plant Origin, Poznań University of Life Sciences , 31 Wojska Polskiego St., 60-624 , Poznań , Poland
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Antioxidant, Antimicrobial and Antiviral Properties of Herbal Materials. Antioxidants (Basel) 2020; 9:antiox9121309. [PMID: 33371338 PMCID: PMC7767362 DOI: 10.3390/antiox9121309] [Citation(s) in RCA: 129] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/09/2020] [Accepted: 12/14/2020] [Indexed: 01/07/2023] Open
Abstract
Recently, increasing public concern about hygiene has been driving many studies to investigate antimicrobial and antiviral agents. However, the use of any antimicrobial agents must be limited due to their possible toxic or harmful effects. In recent years, due to previous antibiotics' lesser side effects, the use of herbal materials instead of synthetic or chemical drugs is increasing. Herbal materials are found in medicines. Herbs can be used in the form of plant extracts or as their active components. Furthermore, most of the world's populations used herbal materials due to their strong antimicrobial properties and primary healthcare benefits. For example, herbs are an excellent material to replace nanosilver as an antibiotic and antiviral agent. The use of nanosilver involves an ROS-mediated mechanism that might lead to oxidative stress-related cancer, cytotoxicity, and heart diseases. Oxidative stress further leads to increased ROS production and also delays the cellular processes involved in wound healing. Therefore, existing antibiotic drugs can be replaced with biomaterials such as herbal medicine with high antimicrobial, antiviral, and antioxidant activity. This review paper highlights the antibacterial, antiviral, and radical scavenger (antioxidant) properties of herbal materials. Antimicrobial activity, radical scavenger ability, the potential for antimicrobial, antiviral, and anticancer agents, and efficacy in eliminating bacteria and viruses and scavenging free radicals in herbal materials are discussed in this review. The presented herbal antimicrobial agents in this review include clove, portulaca, tribulus, eryngium, cinnamon, turmeric, ginger, thyme, pennyroyal, mint, fennel, chamomile, burdock, eucalyptus, primrose, lemon balm, mallow, and garlic, which are all summarized.
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Ebani VV, Mancianti F. Use of Essential Oils in Veterinary Medicine to Combat Bacterial and Fungal Infections. Vet Sci 2020; 7:E193. [PMID: 33266079 PMCID: PMC7712454 DOI: 10.3390/vetsci7040193] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/23/2020] [Accepted: 11/27/2020] [Indexed: 12/12/2022] Open
Abstract
Essential oils (EOs) are secondary metabolites of plants employed in folk medicine for a long time thanks to their multiple properties. In the last years, their use has been introduced in veterinary medicine, too. The study of the antibacterial properties of EOs is of increasing interest, because therapies with alternative drugs are welcome to combat infections caused by antibiotic-resistant strains. Other issues could be resolved by EOs employment, such as the presence of antibiotic residues in food of animal origin and in environment. Although the in vitro antimicrobial activity of EOs has been frequently demonstrated in studies carried out on bacterial and fungal strains of different origins, there is a lack of information about their effectiveness in treating infections in animals. The scientific literature reports some studies about in vitro EOs' activity against animal clinical bacterial and fungal isolates, but in vivo studies are very scanty. The use of EOs in therapy of companion and farm animals should follow careful studies on the toxicity of these natural products in relation to animal species and route of administration. Moreover, considering the different behavior of EOs in relation to both species and strain pathogen, before starting a therapy, an aromatogram should be executed to choose the oil with the best antimicrobial activity.
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Affiliation(s)
- Valentina Virginia Ebani
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy;
- Interdepartmental Research Center “Nutraceuticals and Food for Health”, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Francesca Mancianti
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy;
- Interdepartmental Research Center “Nutraceuticals and Food for Health”, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
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Salehi B, Prakash Mishra A, Nigam M, Karazhan N, Shukla I, Kiełtyka-Dadasiewicz A, Sawicka B, Głowacka A, Abu-Darwish MS, Hussein Tarawneh A, Gadetskaya AV, Cabral C, Salgueiro L, Victoriano M, Martorell M, Docea AO, Abdolshahi A, Calina D, Sharifi-Rad J. Ficus plants: State of the art from a phytochemical, pharmacological, and toxicological perspective. Phytother Res 2020; 35:1187-1217. [PMID: 33025667 DOI: 10.1002/ptr.6884] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 06/02/2020] [Accepted: 08/31/2020] [Indexed: 12/17/2022]
Abstract
Ficus genus is typically tropical plants and is among the earliest fruit trees cultivated by humans. Ficus carica L. is the common fig, Ficus benjamina L. is the weeping fig, and Ficus pumila L. is the creeping fig. These species are commonly used in traditional medicine for a wide range of diseases and contain rich secondary metabolites that have shown diverse applications. This comprehensive review describes for Ficus genus the phytochemical compounds, traditional uses and contemporary pharmacological activities such as antioxidant, cytotoxic, antimicrobial, anti-inflammatory, antidiabetic, antiulcer, and anticonvulsant. An extended survey of the current literature (Science Direct, Scopus, PubMed) has been carried out as part of the current work. The trends in the phytochemistry, pharmacological mechanisms and activities of Ficus genus are overviewed in this manuscript: antimicrobial, antidiabetic, anti-inflammatory and analgesic activity, antiseizure and anti-Parkinson's diseases, cytotoxic and antioxidant. Health-promoting effects, recent human clinical studies, safety and adverse effects of Ficus plants also are covered. The medical potential and long-term pharmacotherapeutic use of the genus Ficus along with no serious reported adverse events, suggests that it can be considered as being safe.
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Affiliation(s)
- Bahare Salehi
- Noncommunicable Diseases Research Center, Bam University of Medical Sciences, Bam, Iran.,Student Research Committee, School of Medicine, Bam University of Medical Sciences, Bam, Iran
| | - Abhay Prakash Mishra
- Department of Pharmaceutical Chemistry, H. N. B. Garhwal University, Garhwal, India
| | - Manisha Nigam
- Department of Biochemistry, H. N. B. Garhwal University, Garhwal, India
| | - Natallia Karazhan
- Department of Pharmacognosy, Pharmaceutical Faculty of the EE VSMU, Vitebsk, Belarus
| | - Ila Shukla
- Pharmacognosy and Ethnopharmacology Division, CSIR-National Botanical Research Institute, Lucknow, India
| | - Anna Kiełtyka-Dadasiewicz
- University of Life Sciences in Lublin, Department of Plant Production Technology and Commodity Science, Lublin, Poland
| | - Barbara Sawicka
- University of Life Sciences in Lublin, Department of Plant Production Technology and Commodity Science, Lublin, Poland
| | - Aleksandra Głowacka
- University of Life Sciences in Lublin, Department of Plant Production Technology and Commodity Science, Lublin, Poland
| | - Mohammad Sanad Abu-Darwish
- Faculty of Pharmacy, Aqaba University of Technology, Aqaba, Jordan.,Departments of Basic and Applied Sciences, Al-Balqa Applied University, Al-Salt, Jordan
| | - Amer Hussein Tarawneh
- Department of Chemistry and Chemical Technology, Tafila Technical University, Tafila, Jordan
| | - Anastassiya V Gadetskaya
- School of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Célia Cabral
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine; CNC.IBILI Consortium & CIBB Consortium, University of Coimbra, Coimbra, Portugal.,Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Lígia Salgueiro
- Faculty of Pharmacy of the University of Coimbra, University of Coimbra, Coimbra, Portugal.,Chemical Process Engineering and Forest Products Research Centre and Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
| | - Montserrat Victoriano
- Department of Nutrition and Dietetics, Faculty of Pharmacy, University of Concepcion, Concepcion, Chile
| | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy, University of Concepcion, Concepcion, Chile.,Unidad de Desarrollo Tecnológico, Universidad de Concepción UDT, Concepcion, Chile
| | - Anca Oana Docea
- Department of Toxicology, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | - Anna Abdolshahi
- Food Safety Research Center (salt), Semnan University of Medical Sciences, Semnan, Iran
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, Craiova, Romania
| | - Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Facultad de Medicina, Universidad del Azuay, Cuenca, Ecuador
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Somrani M, Inglés MC, Debbabi H, Abidi F, Palop A. Garlic, Onion, and Cinnamon Essential Oil Anti-biofilms' Effect against Listeria monocytogenes. Foods 2020; 9:E567. [PMID: 32375294 PMCID: PMC7278783 DOI: 10.3390/foods9050567] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/10/2020] [Accepted: 04/13/2020] [Indexed: 12/12/2022] Open
Abstract
Biofilms represent a serious problem for food industries due to their persistence in processing surfaces, from which they can cause food spoilage or, even worse, lead to foodborne diseases. Microorganisms immersed in biofilms are more resistant to biocides. The search for natural effective alternatives for the prevention and the control of biofilms has increased lately. The aim of this research was to test the antibacterial and the anti-biofilm activities of cinnamon, onion, and garlic essential oils against Listeria monocytogenes. The methodology highlighted first the effect of these essential oils on L. monocytogenes using disc diffusion and minimum inhibitory concentration (MIC) methods and then on initial cell attachment and six hours preformed biofilms. The inhibition of biofilms was assessed by crystal violet assay. Sulfides were the most abundant compounds present in onion and garlic essential oils, while cinnamaldehyde was predominant in cinnamon essential oil. MIC values were of 0.025 mg mL-1 for onion essential oil and 0.100 mg mL-1 for cinnamon and garlic. Onion essential oil inhibited initial cell attachment by 77% at 0.5 of the MIC dose, while at MIC, cinnamon and garlic essential oils inhibited the initial microbial adhesion completely. All three essential oils completely inhibited initial cell attachment when applied at 2 MIC. On the contrary, preformed biofilms were more resistant, and the inhibition rate ranged from 33% to 78%. In summary, this investigation revealed that the essential oils of garlic, onion, and cinnamon show an effective antibiofilm activity against L. monocytogenes and are promising natural antimicrobial alternatives for food processing facilities.
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Affiliation(s)
- Mariem Somrani
- Departamento de Ingeniería Agronómica, Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, 30202 Cartagena, Spain;
- Department of AgriFood Industries, UR17AGR01-PATIO, National Agronomic Institute of Tunisia, University of Carthage, 1082 Tunis, Tunisia;
| | | | - Hajer Debbabi
- Department of AgriFood Industries, UR17AGR01-PATIO, National Agronomic Institute of Tunisia, University of Carthage, 1082 Tunis, Tunisia;
| | - Ferid Abidi
- Laboratory of Protein Engineering and Bioactive Molecules (LIP-MB), National Institute of Applied Sciences and Technology, University of Carthage, 1080 Tunis, Tunisia;
| | - Alfredo Palop
- Departamento de Ingeniería Agronómica, Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, 30202 Cartagena, Spain;
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White R, Joyner PM. A guided-inquiry investigation of bacterial membrane potential using flow cytometry for an undergraduate biochemistry laboratory course. BIOCHEMISTRY AND MOLECULAR BIOLOGY EDUCATION : A BIMONTHLY PUBLICATION OF THE INTERNATIONAL UNION OF BIOCHEMISTRY AND MOLECULAR BIOLOGY 2020; 48:61-66. [PMID: 31532885 DOI: 10.1002/bmb.21303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 08/18/2019] [Accepted: 08/30/2019] [Indexed: 06/10/2023]
Abstract
Flow cytometry has become an important tool in the life sciences and medical fields, yet there are often few opportunities for undergraduate students to receive training with this type of instrumentation as part of life science curricula at many colleges and universities. We describe a straightforward laboratory exercise designed for a college-level biochemistry course that uses flow cytometry to investigate changes in bacterial membrane potential and cell viability in response to various treatments. Anecdotally, we have noticed that many students often have difficulty understanding the concept of membrane potential and the essential role that it plays in cellular processes. Therefore, this exercise also provides a pedagogical tool for visualizing changes in cellular membrane potential as way to enhancing students' comprehension of this abstract concept. Students' understanding of flow cytometry and membrane potential was assessed using a preactivity and postactivity quiz; the results indicate that the students' understanding of these concepts significantly improved after they completed this laboratory exercise. © 2019 International Union of Biochemistry and Molecular Biology, 48(1):61-66, 2020.
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Affiliation(s)
- Rachel White
- From the Natural Science Division, Pepperdine University, Malibu, California, 90263
| | - P Matthew Joyner
- From the Natural Science Division, Pepperdine University, Malibu, California, 90263
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Elcocks ER, Spencer-Phillips PTN, Adukwu EC. Rapid bactericidal effect of cinnamon bark essential oil against Pseudomonas aeruginosa. J Appl Microbiol 2019; 128:1025-1037. [PMID: 31793161 DOI: 10.1111/jam.14538] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 11/27/2019] [Accepted: 11/28/2019] [Indexed: 12/15/2022]
Abstract
AIMS This study aimed to identify the most effective antimicrobial agent from a selection of essential oils (EO) and investigate its bactericidal properties against Pseudomonas aeruginosa. METHODS AND RESULTS The disc diffusion assay and minimal inhibitory/bactericidal concentration tests were used to identify antimicrobial potential. Several oils exhibited antimicrobial effects at concentrations as low as 0·03% (v/v). Significantly, cinnamon (Cinnamomum zeylanicum) bark EO exhibited a broad-spectrum activity against Gram-negative and Gram-positive bacteria and showed bacteriostatic and bactericidal effects against P. aeruginosa PAO1 at 0·125% (v/v) and all other tested organisms, including known multidrug resistant species. Time-kill assays and metabolic activity tests showed cinnamon oil to exhibit rapid killing, with bactericidal activity observed in ≤6 min at ≥0·5% (v/v). Furthermore, scanning electron microscopy and a membrane permeability assay indicated damage to membrane integrity, loss of turgor and cell collapse. CONCLUSION Cinnamon bark EO is a broad-spectrum antimicrobial agent capable of rapid killing at low concentrations. SIGNIFICANCE AND IMPACT OF THE STUDY This study provides a sound basis for further investigation of the potential of cinnamon bark EO as an alternative to conventional antimicrobial products due to its fast-acting bactericidal properties at low concentrations.
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Affiliation(s)
- E R Elcocks
- Department of Health and Applied Sciences, Centre for Research in Biosciences, University of the West of England, Bristol, UK
| | - P T N Spencer-Phillips
- Department of Health and Applied Sciences, Centre for Research in Biosciences, University of the West of England, Bristol, UK
| | - E C Adukwu
- Department of Health and Applied Sciences, Centre for Research in Biosciences, University of the West of England, Bristol, UK
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Nguyen QH, Nguyen HV, Vu THN, Chu-Ky S, Vu TT, Hoang H, Quach NT, Bui TL, Chu HH, Khieu TN, Sarter S, Li WJ, Phi QT. Characterization of Endophytic Streptomyces griseorubens MPT42 and Assessment of Antimicrobial Synergistic Interactions of its Extract and Essential Oil from Host Plant Litsea cubeba. Antibiotics (Basel) 2019; 8:E197. [PMID: 31661781 PMCID: PMC6963632 DOI: 10.3390/antibiotics8040197] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 10/16/2019] [Accepted: 10/25/2019] [Indexed: 11/21/2022] Open
Abstract
The present study aimed to evaluate the synergistic effects of the crude ethyl acetate extract (CEAE) from endophytic actinomycete MPT42 and essential oil (EO) of the same host plant Litsea cubeba. The isolate MPT42, exhibiting broad-spectrum antimicrobial activities and harboring all three antibiotic-related biosynthetic genes pks-I, pks-II, and nrps, was identified as Streptomycete griseorubens based on an analysis of the morphology, physiology, and 16S rDNA sequence. Minimum inhibitory concentrations (MICs) and the fractional inhibitory concentration index were used to estimate the synergistic effects of various combined ratios between CEAE or antibiotics (erythromycin, vancomycin) and EO toward 13 microbial strains including pathogens. L. cubeba fruit EO, showing the main chemical constituents of 36.0% citral, 29.6% carveol, and 20.5% limonene, revealed an active-low against tested microbes (MICs ≥ 600 μg/mL). The CEAE of S. griseorubens culture exhibited moderate-strong antimicrobial activities against microbes (MICs = 80-600 μg/mL). Analysis of the mechanism of action of EO on Escherichia coli ATCC 25922 found that bacterial cells were dead after 7 h of the EO treatment at 1 MIC (5.5 mg/mL), where 62% cells were permeabilized after 2 h and 3% of them were filament (length ≥ 6 μm). Combinations of CEAE, erythromycin, or vancomycin with EO led to significant synergistic antimicrobial effects against microbes with 4-16 fold reduction in MIC values when compared to their single use. Interestingly, the vancomycin-EO combinations exhibited a strong synergistic effect against five Gram-negative bacterial species. This could assume that the synergy was possibly due to increasing the cell membrane permeability by the EO acting on the bacterial cells, which allows the uptake and diffusion of antimicrobial substances inside the cell easily. These findings in the present study therefore propose a possible alternative to combat the emergence of multidrug-resistant microbes in veterinary and clinics.
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Affiliation(s)
- Quang Huy Nguyen
- Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
- University of Science and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
| | - Hai Van Nguyen
- School of Biotechnology and Food Technology, Hanoi University of Science and Technology, 1, Dai Co Viet, Hai Ba Trung, Hanoi 10000, Vietnam.
| | - Thi Hanh-Nguyen Vu
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
| | - Son Chu-Ky
- School of Biotechnology and Food Technology, Hanoi University of Science and Technology, 1, Dai Co Viet, Hai Ba Trung, Hanoi 10000, Vietnam.
| | - Thu Trang Vu
- School of Biotechnology and Food Technology, Hanoi University of Science and Technology, 1, Dai Co Viet, Hai Ba Trung, Hanoi 10000, Vietnam.
| | - Ha Hoang
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
| | - Ngoc Tung Quach
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
| | - Thi Lien Bui
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
| | - Hoang Ha Chu
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
- Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
| | - Thi Nhan Khieu
- Ministry of Education and Training, 49 Dai Co Viet, Hai Ba Trung, Hanoi 10000, Vietnam.
| | - Samira Sarter
- CIRAD, UMR ISEM, University Montpellier, F-34398 Montpellier, France.
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, F-34398 Montpellier, France.
| | - Wen-Jun Li
- School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.
- Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, China.
| | - Quyet-Tien Phi
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
- Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
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Reduction of inflammation and colon injury by a Pennyroyal phenolic extract in experimental inflammatory bowel disease in mice. Biomed Pharmacother 2019; 118:109351. [PMID: 31545244 DOI: 10.1016/j.biopha.2019.109351] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 08/13/2019] [Accepted: 08/14/2019] [Indexed: 12/24/2022] Open
Abstract
PURPOSE Little is known about the pharmacological effects of the phenolic compounds of Pennyroyal (Mentha pulegium). This Mediterranean aromatic plant, used as a gastronomic spice and as food preservative by the food industry has been studied mainly due to its essential oil antibacterial properties, composed primarily by monoterpenes. With this work, we aimed to evaluate the effects of a phenolic extract of pennyroyal in the impairment of inflammatory processes in Inflammatory Bowel Diseases (IBD) and in the potential inhibition of progression to colorectal cancer (CRC). METHODS To that purpose, we evaluated the effect of pennyroyal extract administration in a model of TNBS-induced colitis in mice and further determined its effect on human colon carcinoma cell proliferation and invasion. RESULTS The phenolic extract of pennyroyal exhibited antioxidant properties in in vitro assays and administration of the extract in a rat model of carrageenan-induced paw oedema led to significant anti-inflammatory effects. Further results evidenced a beneficial effect of the phenolic extract in the attenuation of experimental colitis and a potential antiproliferative effect on cultured colon cancer cells, effects not previously described, to our knowledge. A reduction in several markers of colon inflammation was observed following administration of the extract to colitis-induced mice, including functional and histological indicators. A successful inhibition of cancer cell invasion and proliferation was also observed in in vitro studies with HT-29 cells. Furthermore, the extract also led to a reduced expression of iNOS/COX-2 in the colon of colitis-induced mice, both being crucial mediators of intestinal inflammation. CONCLUSIONS Taking into consideration the central role of inflammation in the pathophysiology of CRC and the recognised connection between inflammatory events and cancer, these results enlighten the relevance of the phenolic constituents of pennyroyal as important pharmacological sources in the investigation of new treatment options for patients with inflammatory bowel diseases.
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Wu K, Lin Y, Chai X, Duan X, Zhao X, Chun C. Mechanisms of vapor-phase antibacterial action of essential oil from Cinnamomum camphora var. linaloofera Fujita against Escherichia coli. Food Sci Nutr 2019; 7:2546-2555. [PMID: 31428342 PMCID: PMC6694428 DOI: 10.1002/fsn3.1104] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 05/13/2019] [Accepted: 05/17/2019] [Indexed: 12/14/2022] Open
Abstract
The purpose of this study was to investigate antibacterial activity of essential oil from Cinnamomum camphora var. linaloofera Fujita (EOL) at vapor phase and its mechanism of bactericidal action against Escherichia coli. Results showed that the vapor-phase EOL had significant antibacterial activity with a minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of 200 μl/L. Further analyses showed that treatment of E. coli with vapor-phase EOL resulted in partial degradation of cell membrane, increased membrane permeability, leakage of cytoplasm materials, and prominent distortion and shrinkage of bacterial cells. FTIR showed that EOL altered bacterial protein secondary and tertiary structures. GC/MS analysis showed that the components of vapor-phase EOL included linalool (69.94%), camphor (10.90%), nerolidol (10.92%), and safrole (8.24%), of which linalool had bactericidal activity. Quantum chemical analysis suggested that the antibacterial reactive center of linalool was oxygen atom (O10) which transferred electrons during antibacterial action by the donation of electrons.
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Affiliation(s)
- Kegang Wu
- College of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhouChina
| | - Yahui Lin
- College of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhouChina
- Guangdong Provincial Bioengineering Institute (Guangzhou Sugarcane Industry Research Institute)GuangzhouChina
| | - Xianghua Chai
- College of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhouChina
| | - Xuejuan Duan
- College of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhouChina
| | - Xinxin Zhao
- School of Food Science and TechnologyHenan University of TechnologyZhengzhouChina
| | - Chen Chun
- School of Food Science and EngineeringSouth China University of TechnologyGuangzhouChina
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A Novel Way for Whey: Cheese Whey Fermentation Produces an Effective and Environmentally-Safe Alternative to Chlorine. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9142800] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Cheese whey has been described as an environmental hazard due to its high organic content. Although it has been suggested that whey can be used as food disinfectant, it continues to pose an environmental problem because it still contains a high organic load. Here, we aimed to develop a low-cost, scalable fermentation protocol to produce a disinfectant from dairy waste that has very little organic content and high levels of lactic acid. Fermentation was achieved with industrial whey from ewe, goat, and cow’s milk, using a specific mesophilic-lactic acid bacteria starter mix over 120 h, which yielded the highest lactic acid production and the lowest lactose content. Antibacterial activity was observed against Listeria monocytogenes, Salmonella enterica, and Escherichia coli O157:H7, plus a total of thirteen other food pathogenic and spoilage strains, and antibacterial activities were determined to be highest after 120 h. We further validated this whey’s application as a disinfectant in shredded lettuce and compared its efficacy to that of chlorine, evaluating microbial quality, texture, color, and sensory perception, pH, and O2 and CO2 determinations. Results showed that not only was microbial quality better when using our whey solution (p < 0.05), but also the quality indicators for whey were statistically similar to those treated with chlorine. Hence, our work validates the use of an industrial waste whey as a low-cost, efficient, and environmentally safe disinfectant, with potential applications for minimally processed foodstuffs as an alternative to chlorine.
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Wang H, Qian J, Gu J, Yan W, Zhang J. Steric configuration-enabled selective antimicrobial activity of chiral cysteine. Biochem Biophys Res Commun 2019; 512:505-510. [PMID: 30905412 DOI: 10.1016/j.bbrc.2019.03.080] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 03/14/2019] [Indexed: 01/07/2023]
Abstract
Antibiotics abusing caused multi-drug resistant bacteria was an urgent need to develop effective alternatives to antibiotics. L-Cysteine is an amino acid commonly found in organisms, which is usually used as food additive and detoxication, while the antibacterial activity of L-Cysteine against pathogenic bacteria is rarely reported. Here, we demonstrated the broad-spectrum and selected antibacterial properties of D-/L-Cysteine, for the first time, D-Cysteine (D-Cys) and L-Cysteine (L-Cys) exhibited distinct antibacterial activity based on different bacteria (Escherichia coli, Staphylococcus aureus, Listeria monocytogenes and Salmonella enteritis). Among the four bacteria, L-Cys exhibited preferred antibacterial activity against S. aureus, while D-Cys showed stronger antibacterial activity against other three bacteria compared with L-Cys. Through analyzing cell structure of E. coli, it was demonstrated that D/L-Cys could destroy the integrity of E. coli cell membrane, which further resulted in the leakage of cell contents and cell death. This work has a potential value for the development of chiral bacteriostatic materials.
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Affiliation(s)
- Hongxia Wang
- National Center of Meat Quality & Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jing Qian
- National Center of Meat Quality & Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jiayi Gu
- National Center of Meat Quality & Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wenjing Yan
- National Center of Meat Quality & Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Jianhao Zhang
- National Center of Meat Quality & Safety Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
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Yoon JH, Lee SY. Characteristics of viable-but-nonculturable Vibrio parahaemolyticus induced by nutrient-deficiency at cold temperature. Crit Rev Food Sci Nutr 2019; 60:1302-1320. [DOI: 10.1080/10408398.2019.1570076] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jae-Hyun Yoon
- Department of Food and Nutrition, Chung-Ang University, Anseong-si, Gyeonggi-do, Republic of Korea
| | - Sun-Young Lee
- Department of Food and Nutrition, Chung-Ang University, Anseong-si, Gyeonggi-do, Republic of Korea
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Mouwakeh A, Kincses A, Nové M, Mosolygó T, Mohácsi-Farkas C, Kiskó G, Spengler G. Nigella sativa essential oil and its bioactive compounds as resistance modifiers against Staphylococcus aureus. Phytother Res 2019; 33:1010-1018. [PMID: 30672036 DOI: 10.1002/ptr.6294] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 12/04/2018] [Accepted: 12/31/2018] [Indexed: 11/09/2022]
Abstract
Nigella sativa essential oil (EO) and its compounds (thymoquinone, carvacrol, and p-cymene) have a broad antimicrobial spectrum. The aim of this study was to investigate the antimicrobial and resistance modifying activity of N. sativa EO, thymoquinone, carvacrol, and p-cymene against one methicillin susceptible and one methicillin resistant Staphylococcus aureus strain. N. sativa EO, thymoquinone, carvacrol, and p-cymene were assessed for antimicrobial activity and modulation of antimicrobial resistance (by broth microdilution), inhibition of antimicrobial efflux (by ethidium bromide [EtBr] accumulation assay), relative expression of mepA gene (by real-time reverse transcriptase quantitative polymerase chain reaction), membrane disrupting effect (by LIVE/DEAD BacLight™ Kit), and finally antibiofilm activity (by the crystal violet assay). Both strains of S. aureus were susceptible to N. sativa EO, thymoquinone, and carvacrol. N. sativa EO and carvacrol induced the increase of EtBr accumulated by both S. aureus strains. Membrane integrity of ATCC strain was disrupted by carvacrol and p-cymene, whereas for the methicillin resistant S. aureus (MRSA) strain the membrane integrity was disrupted by each compound. N. sativa EO and its bioactive compounds such as carvacrol and p-cymene could be applied as resistance modifiers in MRSA strains.
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Affiliation(s)
- Ahmad Mouwakeh
- Department of Microbiology and Biotechnology, Szent István University, Budapest, Hungary
| | - Annamária Kincses
- Department of Medical Microbiology and Immunobiology, University of Szeged, Szeged, Hungary
| | - Márta Nové
- Department of Medical Microbiology and Immunobiology, University of Szeged, Szeged, Hungary
| | - Tímea Mosolygó
- Department of Medical Microbiology and Immunobiology, University of Szeged, Szeged, Hungary
| | - Csilla Mohácsi-Farkas
- Department of Microbiology and Biotechnology, Szent István University, Budapest, Hungary
| | - Gabriella Kiskó
- Department of Microbiology and Biotechnology, Szent István University, Budapest, Hungary
| | - Gabriella Spengler
- Department of Medical Microbiology and Immunobiology, University of Szeged, Szeged, Hungary
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Pidaei F, Sharifan A, Masoud R. The effect of Cold Plasma (Combined Argon/Helium Gases) on Microbial Contamination and Physicochemical Properties of Minced Sheep Meat. JOURNAL OF MEDICAL MICROBIOLOGY AND INFECTIOUS DISEASES 2019. [DOI: 10.29252/jommid.7.1.2.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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Ganaie HA. Fungal Diseases of Animals: Symptoms and Their Cure by Natural Products. Fungal Biol 2019. [DOI: 10.1007/978-3-030-18586-2_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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dos Santos RF, Campos BS, Rego Filho FDAMG, Moraes JDO, Albuquerque ALI, da Silva MCD, dos Santos PV, de Araujo MT. Photodynamic inactivation of S. aureus with a water-soluble curcumin salt and an application to cheese decontamination. Photochem Photobiol Sci 2019; 18:2707-2716. [DOI: 10.1039/c9pp00196d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this study, the optimal parameters for the photodynamic inactivation (PDI) of Staphylococcus aureus in bacterial suspensions and in cheese were assessed using a water-soluble curcumin salt as the photosensitizer (PS).
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45
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Alginate Biocomposite Films Incorporated with Cinnamon Essential Oil Nanoemulsions: Physical, Mechanical, and Antibacterial Properties. INT J POLYM SCI 2018. [DOI: 10.1155/2018/1519407] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Alginate-based antibacterial biocomposite films were prepared by incorporating with cinnamon essential oil nanoemulsions (CEO-NE). CEO-NE was first prepared by mixing and homogenizing the oil phase and aqueous phase containing polysorbate 80 (Tween 80), using a probe-type ultrasonication equipment. The biocomposite films were then prepared by incorporating the CEO-NE to an aqueous solution of alginate and glycerol, homogenizing, casting, and drying. The mean droplet size, zeta potential, and polydispersity index of the CEO-NE were 92.2 nm, −15.58 mV, and 0.25, respectively. Young’s modulus of the CEO-NE/alginate biocomposite films was significantly increased with an increasing concentration of CEO-NE, while their elongation at break was significantly decreased. However, the tensile strength of the CEO-NE/alginate biocomposite films was not significantly changed. The maximum tensile strength and elongation at break of the biocomposite films were 15.63 MPa and 23.67%, respectively, corresponding to the biocomposite films containing 20% CEO-NE. The biocomposite films containing 20% CEO-NE also showed strong antibacterial effects against Salmonella typhimurium, Bacillus cereus, Escherichia coli, and Staphylococcus aureus, achieving inhibition zones from 29.7 to 53.0 mm. These results show the potential of the CEO-NE/alginate biocomposite films as antibacterial packaging for extending the shelf life of fresh foods.
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Development of a New Application for Comprehensive Viability Analysis Based on Microbiome Analysis by Next-Generation Sequencing: Insights into Staphylococcal Carriage in Human Nasal Cavities. Appl Environ Microbiol 2018; 84:AEM.00517-18. [PMID: 29625975 DOI: 10.1128/aem.00517-18] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 03/27/2018] [Indexed: 01/08/2023] Open
Abstract
The nasal carriage rate of Staphylococcus aureus in human is 25 to 30%, and S. aureus sporadically causes severe infections. However, the mechanisms underlying staphylococcal carriage remain largely unknown. In the present study, we constructed an rpoB-based microbiome method for staphylococcal species discrimination. Based on a microbiome scheme targeting viable cell DNA using propidium monoazide (PMA) dye (PMA microbiome method), we also developed a new method to allow the comprehensive viability analysis of any bacterial taxon. To clarify the ecological distribution of staphylococci in the nasal microbiota, we applied these methods in 46 nasal specimens from healthy adults. PMA microbiome results showed that Staphylococcaceae and Corynebacteriaceae were the most predominant viable taxa (average relative abundance: 0.435262 and 0.375195, respectively), and Staphylococcus epidermidis exhibited the highest viability in the nasal microbiota. Staphylococcus aureus detection rates from nasal specimens by rpoB-based conventional and PMA microbiome methods were 84.8% (39 of 46) and 69.5% (32 of 46), respectively, which substantially exceeded the values obtained by a culture method using identical specimens (36.9%). Our results suggest that Staphylococcaceae species, especially S. epidermidis, adapted most successfully to human nasal cavity. High detection of S. aureus DNA by microbiome methods suggests that almost all healthy adults are consistently exposed to S. aureus in everyday life. Furthermore, the large difference in S. aureus detection rates between culture and microbiome methods suggests that S. aureus cells frequently exist in a viable but nonculturable state in nasal cavities. Our method and findings will contribute to a better understanding of the mechanisms underlying carriage of indigenous bacteria.IMPORTANCE Metagenomic analyses, such as 16S rRNA microbiome methods, have provided new insights in various research fields. However, conventional 16S rRNA microbiome methods do not permit taxonomic analysis of only the viable bacteria in a sample and have poor resolving power below the genus level. Our new schemes allowed for viable cell-specific analysis and species discrimination, and nasal microbiome data using these methods provided some interesting findings regarding staphylococcal nasal carriage. According to our comprehensive viability analysis, the high viability of Staphylococcus species, especially Staphylococcus epidermidis, in human nasal carriage suggests that this taxon has adapted most successfully to human nasal tissue. Also, a higher detection rate of S. aureus DNA by microbiome methods (84.8%) than by a culture method (36.9%) suggests that almost all healthy adults are consistently exposed to Staphylococcus aureus in the medium and long term. Our findings will contribute to a better understanding of the mechanisms underlying the carriage of indigenous bacteria.
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Herman A. Antimicrobial Ingredients as Preservative Booster and Components of Self-Preserving Cosmetic Products. Curr Microbiol 2018; 76:744-754. [PMID: 29651551 DOI: 10.1007/s00284-018-1492-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 04/10/2018] [Indexed: 01/24/2023]
Abstract
This review reports cosmetic ingredients with antimicrobial activity including synthetic and natural (plant and microbial) origin as alternative for preservatives used in cosmetics as well described mechanism of their action.
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Affiliation(s)
- Anna Herman
- Faculty of Cosmetology, The Academy of Cosmetics and Health Care, Podwale 13 Street, 00-252, Warsaw, Poland.
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In vitro antibacterial activity of plant essential oils against Staphylococcus hyicus and Staphylococcus aureus, the causative agents of exudative epidermitis in pigs. Arch Microbiol 2018; 200:1001-1007. [PMID: 29623386 DOI: 10.1007/s00203-018-1512-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 03/21/2018] [Accepted: 03/29/2018] [Indexed: 10/17/2022]
Abstract
Greasy pig disease or exudative epidermitis, a generalized or localized skin disease affecting piglets, is mainly caused by Staphylococcus hyicus, although other staphylococcal species such as Staphylococcus aureus may also induce disease. Piglets with skin lesions can be treated systemically with antibiotics. However, antimicrobial resistance to β-lactam antibiotics are now frequently observed in S. hyicus and S. aureus isolates. In this study, the antibacterial activity of plant essential oils as well as their ability to potentiate the effect of several antimicrobial compounds against S. hyicus and S. aureus were investigated with a view to a potential use as skin disinfectants. Among ten essential oils tested, those from cinnamon, thyme, and winter savory were the most active with minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) values ranging from 0.078 to 0.313% (v/v). Using a fluorescent probe with DNA affinity, it was found that thyme and winter savory oils act, at least in part, by disturbing the bacterial membrane integrity. At concentrations below the MIC, thyme and winter savory oils reduced biofilm formation by S. hyicus. Moreover, a treatment of pre-formed biofilms of S. hyicus with cinnamon or thyme oils significantly decreases its viability. Synergistic interactions between essential oils, more particularly from thyme and winter savory, and penicillin G, chlorhexidine or nisin, were observed. This study supports the therapeutic potential of essential oils as topical therapeutic agents against exudative epidermitis.
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Growth of Listeria monocytogenes in pasteurized vanilla cream pudding as affected by storage temperature and the presence of cinnamon extract. Food Res Int 2018; 106:1114-1122. [DOI: 10.1016/j.foodres.2017.11.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 10/30/2017] [Accepted: 11/19/2017] [Indexed: 11/24/2022]
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Owen L, Laird K. Synchronous application of antibiotics and essential oils: dual mechanisms of action as a potential solution to antibiotic resistance. Crit Rev Microbiol 2018; 44:414-435. [PMID: 29319372 DOI: 10.1080/1040841x.2018.1423616] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Antibiotic resistance has increased dramatically in recent years, yet the antibiotic pipeline has stalled. New therapies are therefore needed to continue treating antibiotic resistant infections. One potential strategy currently being explored is the use of non-antibiotic compounds to potentiate the activity of currently employed antibiotics. Many natural products including Essential Oils (EOs) possess broad spectrum antibacterial activity and so have been investigated for this purpose. This article aims to review recent literature concerning the antibacterial activity of EOs and their interactions with antibiotics, with consideration of dual mechanisms of action of EOs and antibiotics as a potential solution to antibiotic resistance. Synergistic interactions between EOs and their components with antibiotics have been reported, including several instances of antibiotic resensitization in resistant isolates, in support of this strategy to control antibiotic resistance. However, a lack of consistency in methods and interpretation criteria makes drawing conclusions of efficacy of studied combinations difficult. Synergistic effects are often not explored beyond preliminary identification of antibacterial interactions and mechanism of action is rarely defined, despite many hypotheses and recommendations for future study. Much work is needed to fully understand EO-antibiotic associations before they can be further developed into novel antibacterial formulations.
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Affiliation(s)
- Lucy Owen
- a Infectious Disease Research Group, The School of Pharmacy , De Montfort University , Leicester , UK
| | - Katie Laird
- a Infectious Disease Research Group, The School of Pharmacy , De Montfort University , Leicester , UK
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